add translate

baidu_translate/module.py

@@ -0,0 +1,104 @@
+import argparse
+import random
+from hashlib import md5
+from typing import Optional
+
+import requests
+
+import paddlehub as hub
+from paddlehub.module.module import moduleinfo
+from paddlehub.module.module import runnable
+from paddlehub.module.module import serving
+
+
+def make_md5(s, encoding='utf-8'):
+    return md5(s.encode(encoding)).hexdigest()
+
+
+@moduleinfo(name="baidu_translate",
+            version="1.0.0",
+            type="text/machine_translation",
+            summary="",
+            author="baidu-nlp",
+            author_email="paddle-dev@baidu.com")
+class BaiduTranslate:
+
+    def __init__(self, appid=None, appkey=None):
+        """
+      :param appid: appid for requesting Baidu translation service.
+      :param appkey: appkey for requesting Baidu translation service.
+      """
+        # Set your own appid/appkey.
+        if appid == None:
+            self.appid = '20201015000580007'
+        else:
+            self.appid = appid
+        if appkey is None:
+            self.appkey = 'IFJB6jBORFuMmVGDRud1'
+        else:
+            self.appkey = appkey
+        self.url = 'http://api.fanyi.baidu.com/api/trans/vip/translate'
+
+    def translate(self, query: str, from_lang: Optional[str] = "en", to_lang: Optional[int] = "zh"):
+        """
+        Create image by text prompts using ErnieVilG model.
+
+        :param query: Text to be translated.
+        :param from_lang: Source language.
+        :param to_lang: Dst language.
+
+        Return translated string.
+        """
+        # Generate salt and sign
+        salt = random.randint(32768, 65536)
+        sign = make_md5(self.appid + query + str(salt) + self.appkey)
+
+        # Build request
+        headers = {'Content-Type': 'application/x-www-form-urlencoded'}
+        payload = {'appid': self.appid, 'q': query, 'from': from_lang, 'to': to_lang, 'salt': salt, 'sign': sign}
+
+        # Send request
+        try:
+            r = requests.post(self.url, params=payload, headers=headers)
+            result = r.json()
+        except Exception as e:
+            error_msg = str(e)
+            raise RuntimeError(error_msg)
+        if 'error_code' in result:
+            raise RuntimeError(result['error_msg'])
+        return result['trans_result'][0]['dst']
+
+    @runnable
+    def run_cmd(self, argvs):
+        """
+        Run as a command.
+        """
+        self.parser = argparse.ArgumentParser(description="Run the {} module.".format(self.name),
+                                              prog='hub run {}'.format(self.name),
+                                              usage='%(prog)s',
+                                              add_help=True)
+        self.arg_input_group = self.parser.add_argument_group(title="Input options", description="Input data. Required")
+        self.add_module_input_arg()
+        args = self.parser.parse_args(argvs)
+        if args.appid is not None and args.appkey is not None:
+            self.appid = args.appid
+            self.appkey = args.appkey
+        result = self.translate(args.query, args.from_lang, args.to_lang)
+        return result
+
+    @serving
+    def serving_method(self, query, from_lang, to_lang):
+        """
+        Run as a service.
+        """
+        return self.translate(query, from_lang, to_lang)
+
+    def add_module_input_arg(self):
+        """
+        Add the command input options.
+        """
+        self.arg_input_group.add_argument('--query', type=str)
+        self.arg_input_group.add_argument('--from_lang', type=str, default='en', help="源语言")
+        self.arg_input_group.add_argument('--to_lang', type=str, default='zh', help="目标语言")
+        self.arg_input_group.add_argument('--appid', type=str, default=None, help="注册得到的个人appid")
+        self.arg_input_group.add_argument('--appkey', type=str, default=None, help="注册得到的个人appkey")